3 files changed, 57 insertions, 0 deletions
diff --git a/sources/pyside6/tests/pysidetest/CMakeLists.txt b/sources/pyside6/tests/pysidetest/CMakeLists.txt
index 3965455c9..eaf748517 100644
--- a/sources/pyside6/tests/pysidetest/CMakeLists.txt
+++ b/sources/pyside6/tests/pysidetest/CMakeLists.txt
@@ -144,6 +144,7 @@ PYSIDE_TEST(new_inherited_functions_test.py)
 PYSIDE_TEST(notify_id.py)
 PYSIDE_TEST(properties_test.py)
 PYSIDE_TEST(property_python_test.py)
+PYSIDE_TEST(snake_case_test.py)
 PYSIDE_TEST(true_property_test.py)
 PYSIDE_TEST(qapp_like_a_macro_test.py)
 PYSIDE_TEST(qvariant_test.py)
diff --git a/sources/pyside6/tests/pysidetest/snake_case_sub.py b/sources/pyside6/tests/pysidetest/snake_case_sub.py
new file mode 100644
index 000000000..5056d50bb
--- /dev/null
+++ b/sources/pyside6/tests/pysidetest/snake_case_sub.py
@@ -0,0 +1,22 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+import os
+import sys
+import unittest
+
+from pathlib import Path
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
+from init_paths import init_test_paths
+init_test_paths(False)
+
+"""
+PYSIDE-2029: Tests that snake_case is isolated from imported modules
+"""
+
+from PySide6.QtWidgets import QWidget
+
+def test_no_snake_case():
+    print(__name__)
+    widget = QWidget()
+    check = widget.sizeHint
diff --git a/sources/pyside6/tests/pysidetest/snake_case_test.py b/sources/pyside6/tests/pysidetest/snake_case_test.py
new file mode 100644
index 000000000..aaa3d3f2a
--- /dev/null
+++ b/sources/pyside6/tests/pysidetest/snake_case_test.py
@@ -0,0 +1,34 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+import os
+import sys
+import unittest
+
+from pathlib import Path
+sys.path.append(os.fspath(Path(__file__).resolve().parents[1]))
+from init_paths import init_test_paths
+init_test_paths(False)
+
+"""
+PYSIDE-2029: Tests that snake_case is isolated from imported modules
+"""
+
+from PySide6.QtCore import QSize
+from PySide6.QtWidgets import QWidget, QSpinBox
+from __feature__ import snake_case
+from helper.usesqapplication import UsesQApplication
+
+import snake_case_sub
+
+class SnakeCaseNoPropagateTest(UsesQApplication):
+
+    def testSnakeCase(self):
+        # this worked
+        widget = QWidget()
+        check = widget.size_hint
+
+        snake_case_sub.test_no_snake_case()
+
+if __name__ == '__main__':
+    unittest.main()